8afa2f473d
* fix(lp parser): improves the error message when parsing tagsets A tagset is an optional list of (tag_key=tag_value) that start immediatelly after the measurement. The tagset and measurement are separated by a comma. If that comma is present, at least one tag=value pair must be present. This pr expresses that must relationship and provides a Tag Set Malformed erorr now if there's something wrong with the tag set. The input test case is added which is missing the tag value - I'd like to improve the errors to be more specific still, but one case at a time. * fixes #7772 * chore: add test case This commit adds a test case for a comma after the measurement but no tagset thereafter. This is also an error condition. Before this PR this was accepted as an empty tagset, but the spec and the canonical golang parser do not permit this. |
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| README.md | ||
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README.md
influxdb_line_protocol
This crate contains pure Rust implementations of
-
A parser for InfluxDB Line Protocol developed as part of the InfluxDB IOx project. This implementation is intended to be compatible with the Go implementation, however, this implementation uses a nom combinator-based parser rather than attempting to port the imperative Go logic so there are likely some small diferences.
-
A builder to contruct valid InfluxDB Line Protocol
Example
Here is an example of how to parse the following line
protocol data into a ParsedLine:
cpu,host=A,region=west usage_system=64.2 1590488773254420000
use influxdb_line_protocol::{ParsedLine, FieldValue};
let mut parsed_lines =
influxdb_line_protocol::parse_lines(
"cpu,host=A,region=west usage_system=64i 1590488773254420000"
);
let parsed_line = parsed_lines
.next()
.expect("Should have at least one line")
.expect("Should parse successfully");
let ParsedLine {
series,
field_set,
timestamp,
} = parsed_line;
assert_eq!(series.measurement, "cpu");
let tags = series.tag_set.unwrap();
assert_eq!(tags[0].0, "host");
assert_eq!(tags[0].1, "A");
assert_eq!(tags[1].0, "region");
assert_eq!(tags[1].1, "west");
let field = &field_set[0];
assert_eq!(field.0, "usage_system");
assert_eq!(field.1, FieldValue::I64(64));
assert_eq!(timestamp, Some(1590488773254420000));